APPARATUS DROPPING PEBBLES 0N DIGGED RIVER-BED UNDER BRIDGE USING RAIL ROLLERS

摘要

The present invention relates to a deep-depth and uneven bottom of the bridge or to the submerged sediment prevention rail type stone dropping device of the underwater floor to drop the sandstone to prevent the underwater floor to be washed by a high flow rate in the water of the lower part of the bridge,;In the device for dropping the sandstone 10 loaded on the barge 20 using an excavator 30 to prevent scouring of the bottom of the bridge under water, the hinge 113 is connected to the tip of the barge 20. The rail frame 110 is rotated and inclined downward toward the bottom of the water, and a plurality of rail rollers 111 are connected in the transverse direction between the rail frames 110, and cover an upper portion of the rail rollers 111. An upper cover 120 having an inlet expanded seat opening 121 is fixed to both sides of the rail frame 110, and height adjustment jacks 131 are fixed to lower ends of the rail frame 110 to move wheels. The winch 140 is connected to the 130, the rear end of the barge 20 is connected to the anchor 141 dropped on the bottom of the water by a wire 142 is installed.